I'm working on doing a full rebuild of a sohc zc, the details of which I am keeping quiet

I'm just wanting to know the difference between the 2 motors, from what I've read/found/been told, the only difference is pistons CR, any validitiy on this? Other differences? You there bauley?

Search returned 5 pages of results, most closely related was this one:

https://honda-tech.com/zerothread?id=949577

 

bump

 

I want to know as well. A local place that sells imported motors, have some 92-95 engines, some labeled ZC, some labeled D15B.

I wonder if the SOHC ZC = d15b or d16z6.

If the ZC is identical to the D15B, which i think it is, then your question has been answered many times.

 

as far as I can tell, it's the same as the z6 except for the compression ratio...but I've had no one confirm that for me. Also I've read the dizzy coil is different, but I don't believe that. So, I'm looking for an expert to educate me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pioneer162 &raquo;</TD></TR><TR><TD CLASS="quote">as far as I can tell, it's the same as the z6 except for the compression ratio...but I've had no one confirm that for me. Also I've read the dizzy coil is different, but I don't believe that. So, I'm looking for an expert to educate me.</TD></TR></TABLE>

I think the SOHC VTEC ZC is more related to the D15B then a D16Z6

 

my sohc vtec zc has the same # stamps as a z6 but it has ZC stamped on the front where d16z6 norm. goes. p-28 on the bottom of the block.

 

how so?

 

p28 ecu, zc block....I've bought all z6 components for it with no problems.... I just think the pistons are higher compression hence a bit more power/torque.....

 

the old SOHC ZC = d16a6

the newer one i believe comes with vtec so its equivalent to a d16z6

 

I have the vtec sohc if it helps any, I know the z6 parts match up to it for the most part, just making sure I'm getting the right stuff for the internals *cough* sleeves *cough*

 

bizzump

 

lunch bump

 

up to the top we go

 

 

well according to my local importer who sells billions of these including the 2 I bought recently the d15b was for 96-00 model cars the zc was for 88-95 model cars and is similar to the 88-91 Si motor

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Br1anPham &raquo;</TD></TR><TR><TD CLASS="quote">

I think the SOHC VTEC ZC is more related to the D15B then a D16Z6

</TD></TR></TABLE>

the d15b and the sohc zc are two different motors. the zc says "zc" where the engine code can normally be found. however the d15b vtec and sohc zc vtec both run a po8 vtec head

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sans &raquo;</TD></TR><TR><TD CLASS="quote">well according to my local importer who sells billions of these including the 2 I bought recently the d15b was for 96-00 model cars the zc was for 88-95 model cars and is similar to the 88-91 Si motor</TD></TR></TABLE>

the d15b vtec ive seen years as early as 91. or so the stamp on the head says so. there was a sohc non vtec zc for 88-91 which was almost identical to a d16a6 just better cam. same goes or the 92-95 sohc zc vtec. very similar to the d16z6 just better cam. i have a sohc zc vtec my self and ive been real curious as to what pistons are inside. i know th elbock says p28 though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kyosoeg6 &raquo;</TD></TR><TR><TD CLASS="quote">

the d15b and the sohc zc are two different motors. the zc says "zc" where the engine code can normally be found. however the d15b vtec and sohc zc vtec both run a po8 vtec head
</TD></TR></TABLE>

Your right.

the 92-95 ZC, d15b, and d16z6 all run the same head.

According to HT's archieve, the ZC also has same crank used in the D16's. And according to the topic creator, it uses different pistons.

So problem solved, i believe all z6 parts will fit your zc.

 

i believe the question here has a lot to do w/ the displacement of these motors.

as i've understood, the sohc vtec zc is a 1.6L motor, making much more a d16z6 than a d15b. also the p28 stamps people have been pointing too seem to be a hint too...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Br1anPham &raquo;</TD></TR><TR><TD CLASS="quote">And according to the topic creator, it uses different pistons.</TD></TR></TABLE>

LOL I started this thread to find confirmation, still up in the air, still un-answered, but with everything I have found since starting this thread, I feel comfortable with z6 parts, and so does my engine shop

Still awaiting the arrival of the SOHC gods. Have a nice day.

~Me

 

We've had a SOHC VTEC ZC torn down here at the shop and it looked just like the internals of a US-spec D16Z6.

I believe they get the extra 5hp over the D16Z6 from cams - I don't think the pistons are different at all.

 

Thank you for that nfo, I'll be selling everything out of this thing just as soon as they get it tore down. I put it in the shop on Saturday. Watch for my FS ad in the classifieds section!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C5-EH2 &raquo;</TD></TR><TR><TD CLASS="quote">We've had a SOHC VTEC ZC torn down here at the shop and it looked just like the internals of a US-spec D16Z6.

I believe they get the extra 5hp over the D16Z6 from cams - I don't think the pistons are different at all.</TD></TR></TABLE>

i know the jdm d15 has more "agressive" cams than the us spec z6, so your saying the zc is basically the jdm d15?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Burns &raquo;</TD></TR><TR><TD CLASS="quote">

i know the jdm d15 has more "agressive" cams than the us spec z6, so your saying the zc is basically the jdm d15?</TD></TR></TABLE>

No.

The JDM VTEC Zc is basically the same as the D16Z6, which is a 1.6L engine. The D15B VTEC is a 1.5L, so no they are not the same.

 

does the zc use the same cam as the d15b?

 

I believe SOHC VTEC ZC is to D16Z6, what SOHC non VTEC ZC is to D16A6, and what DOHC ZC is to D16A9, I mean JDM and EDM/USDM spec, and they've cam differences as someone said up there!